Moustached warbler / Mariskensänger (Acrocephalus melanopogon)

Wikipedia: Moustached warbler Source: OTHER 1200px-Acrocephalus_melanopogon_ad03_CB.jpg
Classification: Genus Acrocephalus; Subfamily Acrocephalinae; Family Old world warblers (Sylviidae)
General: The moustached warbler (Acrocephalus melanopogon) is an Old World warbler in the genus Acrocephalus. It breeds in southern Europe and southern temperate Asia with a few in north-west Africa. It is partially migratory. South west European birds are resident, south east European birds winter in the Mediterranean breeding range, and the Asiatic race migrates to Arabia, India and Pakistan. [more]
Song: Song most resembling that of Reed Warbler (A, scirpaceus), but often includes diagnostic (unique among congeners), pure-sounding note sequence resembling crescendo of Common Nightingale (L. megarhynchos), before launching into typical Acrocephalus sounding song. This latter type can be sustained for some time without the diagnostic sequence and is more difficult to distinguish from A. scirpaceus. Note faster tempo and more variation. [Link]
Calls: Contact call a dry "trrrt", similar to corresponding call of Sedge Warbler. [Link]
Physical details: length=12-13 cm, wingspan=15-16 cm, weight=10-14 g

🔍 No documented observation